Home / 1,134.45-1,688.57-1,108.94

Finding the Fourth Proportional to 1,134.45, 1,688.57 and 1,108.94

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Solution

The fourth proportional to 1,134.45, 1,688.57 and 1,108.94 is: 1,650.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,134.45 : 1,688.57 = 1,108.94 : x
  2. Step 2: Convert to fraction form
    1,134.45/1,688.57 = 1,108.94/x
  3. Step 3: Cross multiply
    1,134.45x = 1,688.57 × 1,108.94
  4. Step 4: Simplify right side
    1,134.45x = 1,872,515.16
  5. Step 5: Solve for x
    x = 1,872,515.16/1,134.45
  6. Step 6: Final answer
    x = 1,650.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.